Sash-lock.



J'. M. SHAGKELFORD.

SASH LOCK.

APPLICATION FILED JULY 3, 1914.

Patented Dec. 22, 1914M Zzvezz for OOOOOOO 1 f JOEL'MARGUS sHAeKnLFoRD, oFvAsLHtAND, KENTuoKx-l Y' f Sasa-1100K.`

y specimen@ 'of Letters raient. l i

Application mea :any 3 ,i19i.7y serial No. 845,851,

i To aZZiw-wmz't may' concern Be itfjknown thatI, 'JoU'EL 'Mi Srrnomar.-v

:romnfa citizen ofthe United States, residV` ing at Ashland, in the county of "B-oyd'f'andfv State of Kentucky, have invented new and useful Improvements f in vSash-Locks, kof

i which the I'folhaw/ing isja specification.y

v t This invention'v` yrelates"pto#improvements Linwinfdow -.sash loeks,''proposing a device 'v10 l both.. of the sashes which; may be operated 1"to `lock"either.or at" any: desired position Y The Object @fthe invention 'is toiprovid@ rable nature which`n`1`ayl `bei readily appliedV which acts positively in its locking function. A sash lockinaccordance. with the inven- 'tion includes a' p'airfofrack or'eojuivalentY bars arranged respectively at one sidev ofthe window frame and at an-` adjoining side vof one of the sashes, a pair of cog wheels disv n l1s. obvious.` ,Thefkey 7 maybe koperated `1n ,'[any position'of 'either orboth the sashes.

posed. A,at substantial` right angles to lone another and mounted upontlfe sash which is devoidof a rack bar, and a pivotally mount'- ed lock key arranged-on the sash which carries the 'cog wheels and having4 projections which are operative by a single operation of said key to simultaneously engage between j adjoining teeth of, both cog wheels.

v Fig f1 is a detail i locking key. v i l Similarcharacters ofreference designate l vAn embodiment of the invention isy illustratedl in the' accompanying drawings, wherein c Figure 1 is a view, partlv in elevation and e partly in section of a window structureto i fwhich the. improved fastener'is applied.

Fig. 2 is a sectional viewof the'same in a plane at right angles to the elevation. Fig.

l j 3 isa.horizontalsectionalview on the'line 3-3 of Fig. `1l looking downwardly, and

perspectivey View of the i correspondingparts` throughout the several views.

Liso,

Theletters A, B, and" C designate, respec Y tively, the lower `sash,theu pper sash, and the window frameinwhich said sashes are fitted. The upper sash .is'provided at one side thereof andonits inner face with a rack bar 1 andthe frame C isprovided at I its side adjoining the rack-bar 1 and atthe "same elevation as said krack bar,with a.v

lvreten-eeepee. 22, .1914."

fand 6 respectively which 'are disposed at right4 angles, the spur wheely coperating nwiththe rack bar 1, and the spur wheel 6 co-j operating withthe rack bar-2'. Thesash.

ylock is completed by a locking key 7 which y is inthe forrnofa plate pivoted at 8 on the j, plate 3 vand having'at one end a fingerfpiece 9 and .at` its'other end al1/arcuate extension y10;3 'lhe extension 10 is providedwith lugs 11and12arranged at an interval and angle `corresponding to'theintervaly and angular arrangement ofthe spur wheels 5 and 6, the

lug l1" coperating with thespur wheel '5` andthelug-12lcoperating withl the spur wheel 6. l y l f -J 'By moving thel key`r 7 on fits pivot. to engage sashes will beflocked against movement as Thus the lower sash may be raisedto any Vdesired elevation4 and locked therein by a `Lmanipulationof thefkey 7; or the upper sash may be lowered to anydesired elevation and similarly locked; or the lower sash may be in any desired elevated position and the'upper sash maybe in any desired lowered positions" andfboth sashes may be lthe' ylu,g2 s`-1l and.12 between adjoining :teeth i offthegrespective spur `wheels 5 andv 6 the lockedin their respective positions by a single operation of the key 7.v When the key 7 is in locking or operative position it `positively locks the sashes against movement whatever the positionsvthereof in the window pane., l i j 4 j Tofreleasey the sashes thel key v7 is moved from the dottedline position of said Fig.3 to the full line position of said figure wherebyto disengage the lugs `11 and 12 yfrom the respective spur wheels 5 and 6 at which `,time either or bothsashes may be freely vmoved to any desired position.' j

The lugs 11 andy 12 are formed in `cross section to correspond to the outline of the notches or recesses between the teeth of the "spur wheels and their upperedges are preferably arranged on inclines whereby the lugs have a taper form and have a wedge fit be# j tween the adjoining teeth of the spur wheels. ABy thus forming said lugs thefkey `7 will 

